3 Broadcom B43 wireless driver
6 Copyright (c) 2007 Michael Buesch <mb@bu3sch.de>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
21 Boston, MA 02110-1301, USA.
27 #include "phy_common.h"
29 #include <linux/kmod.h>
32 /* Returns TRUE, if the radio is enabled in hardware. */
33 static bool b43_is_hw_radio_enabled(struct b43_wldev
*dev
)
35 if (dev
->phy
.rev
>= 3) {
36 if (!(b43_read32(dev
, B43_MMIO_RADIO_HWENABLED_HI
)
37 & B43_MMIO_RADIO_HWENABLED_HI_MASK
))
40 if (b43_read16(dev
, B43_MMIO_RADIO_HWENABLED_LO
)
41 & B43_MMIO_RADIO_HWENABLED_LO_MASK
)
47 /* The poll callback for the hardware button. */
48 static void b43_rfkill_poll(struct input_polled_dev
*poll_dev
)
50 struct b43_wldev
*dev
= poll_dev
->private;
51 struct b43_wl
*wl
= dev
->wl
;
53 bool report_change
= 0;
55 mutex_lock(&wl
->mutex
);
56 if (unlikely(b43_status(dev
) < B43_STAT_INITIALIZED
)) {
57 mutex_unlock(&wl
->mutex
);
60 enabled
= b43_is_hw_radio_enabled(dev
);
61 if (unlikely(enabled
!= dev
->radio_hw_enable
)) {
62 dev
->radio_hw_enable
= enabled
;
64 b43info(wl
, "Radio hardware status changed to %s\n",
65 enabled
? "ENABLED" : "DISABLED");
67 mutex_unlock(&wl
->mutex
);
69 /* send the radio switch event to the system - note both a key press
70 * and a release are required */
71 if (unlikely(report_change
)) {
72 input_report_key(poll_dev
->input
, KEY_WLAN
, 1);
73 input_report_key(poll_dev
->input
, KEY_WLAN
, 0);
77 /* Called when the RFKILL toggled in software. */
78 static int b43_rfkill_soft_toggle(void *data
, enum rfkill_state state
)
80 struct b43_wldev
*dev
= data
;
81 struct b43_wl
*wl
= dev
->wl
;
84 if (!wl
->rfkill
.registered
)
87 mutex_lock(&wl
->mutex
);
88 if (b43_status(dev
) < B43_STAT_INITIALIZED
)
92 case RFKILL_STATE_UNBLOCKED
:
93 if (!dev
->radio_hw_enable
) {
94 /* No luck. We can't toggle the hardware RF-kill
95 * button from software. */
99 if (!dev
->phy
.radio_on
)
100 b43_software_rfkill(dev
, state
);
102 case RFKILL_STATE_SOFT_BLOCKED
:
103 if (dev
->phy
.radio_on
)
104 b43_software_rfkill(dev
, state
);
107 b43warn(wl
, "Received unexpected rfkill state %d.\n", state
);
111 mutex_unlock(&wl
->mutex
);
116 char * b43_rfkill_led_name(struct b43_wldev
*dev
)
118 struct b43_rfkill
*rfk
= &(dev
->wl
->rfkill
);
120 if (!rfk
->registered
)
122 return rfkill_get_led_name(rfk
->rfkill
);
125 void b43_rfkill_init(struct b43_wldev
*dev
)
127 struct b43_wl
*wl
= dev
->wl
;
128 struct b43_rfkill
*rfk
= &(wl
->rfkill
);
133 rfk
->rfkill
= rfkill_allocate(dev
->dev
->dev
, RFKILL_TYPE_WLAN
);
136 snprintf(rfk
->name
, sizeof(rfk
->name
),
137 "b43-%s", wiphy_name(wl
->hw
->wiphy
));
138 rfk
->rfkill
->name
= rfk
->name
;
139 rfk
->rfkill
->state
= RFKILL_STATE_UNBLOCKED
;
140 rfk
->rfkill
->data
= dev
;
141 rfk
->rfkill
->toggle_radio
= b43_rfkill_soft_toggle
;
142 rfk
->rfkill
->user_claim_unsupported
= 1;
144 rfk
->poll_dev
= input_allocate_polled_device();
145 if (!rfk
->poll_dev
) {
146 rfkill_free(rfk
->rfkill
);
150 rfk
->poll_dev
->private = dev
;
151 rfk
->poll_dev
->poll
= b43_rfkill_poll
;
152 rfk
->poll_dev
->poll_interval
= 1000; /* msecs */
154 rfk
->poll_dev
->input
->name
= rfk
->name
;
155 rfk
->poll_dev
->input
->id
.bustype
= BUS_HOST
;
156 rfk
->poll_dev
->input
->id
.vendor
= dev
->dev
->bus
->boardinfo
.vendor
;
157 rfk
->poll_dev
->input
->evbit
[0] = BIT(EV_KEY
);
158 set_bit(KEY_WLAN
, rfk
->poll_dev
->input
->keybit
);
160 err
= rfkill_register(rfk
->rfkill
);
162 goto err_free_polldev
;
164 #ifdef CONFIG_RFKILL_INPUT_MODULE
165 /* B43 RF-kill isn't useful without the rfkill-input subsystem.
166 * Try to load the module. */
167 err
= request_module("rfkill-input");
169 b43warn(wl
, "Failed to load the rfkill-input module. "
170 "The built-in radio LED will not work.\n");
171 #endif /* CONFIG_RFKILL_INPUT */
173 #if !defined(CONFIG_RFKILL_INPUT) && !defined(CONFIG_RFKILL_INPUT_MODULE)
174 b43warn(wl
, "The rfkill-input subsystem is not available. "
175 "The built-in radio LED will not work.\n");
178 err
= input_register_polled_device(rfk
->poll_dev
);
186 rfkill_unregister(rfk
->rfkill
);
188 input_free_polled_device(rfk
->poll_dev
);
189 rfk
->poll_dev
= NULL
;
194 b43warn(wl
, "RF-kill button init failed\n");
197 void b43_rfkill_exit(struct b43_wldev
*dev
)
199 struct b43_rfkill
*rfk
= &(dev
->wl
->rfkill
);
201 if (!rfk
->registered
)
205 input_unregister_polled_device(rfk
->poll_dev
);
206 rfkill_unregister(rfk
->rfkill
);
207 input_free_polled_device(rfk
->poll_dev
);
208 rfk
->poll_dev
= NULL
;